Class 8 Mathematics — Chapter 13: Algebra Play
72 practice questions · 24 Easy · 24 Medium · 24 Hard
Practise the most important Class 8 Mathematics questions from Chapter 13, "Algebra Play" — 72 NCERT-aligned multiple-choice questions with answers and explanations. The set is split into 24 Easy, 24 Medium and 24 Hard, so you can warm up on the fundamentals and then push into the exam-level problems that separate top scorers in CBSE Board exams.
"Algebra Play" is one of the chapters where problem-solving speed, formula recall and step-by-step reasoning really pays off. Each MCQ on this chapter is timed and uses exam-grade marking (+4 correct, −1 wrong, 0 skipped), training the same negative-marking accuracy-under-pressure that real papers demand. Every question carries a short explanation, so a wrong answer becomes a quick lesson rather than a dead end — the fastest way to close gaps before a test.
Use this chapter as targeted revision: attempt the Easy set first to confirm your basics on Algebra Play, then move to Medium and Hard to test application and problem-solving. Your accuracy, streaks and XP save automatically, and the chapter feeds into your overall Class 8 Mathematics mastery score. A sample question is shown below; sign in free to see its answer and practise all 72.
Key concepts: Algebra Play (Class 8 Mathematics)
This chapter plays with algebra to explain and invent number tricks. A variable is a letter that stands for any number, and expressions are built from variables, coefficients and constants. You simplify expressions by combining like terms, evaluate them by substituting values, and solve simple equations by doing the same operation to both sides. The real fun is generalising — using a letter to prove why a 'think of a number' trick, a number pyramid or a digit-reversal always works.
- Variable
- A letter such as x or n that stands for an unknown or changing number, letting us write general rules instead of one-off calculations.
- Expression, term, coefficient
- An expression like 3x + 4 is built from terms (3x and 4); in 3x, 3 is the coefficient and x the variable, while 4 is a constant.
- Like and unlike terms
- Like terms have exactly the same variables (3x and 5x) and can be combined; unlike terms (2a and 3b) cannot be added together.
- Simplifying expressions
- Combine like terms by adding or subtracting their coefficients: 8x + 3 − 3x + 2 becomes 5x + 5.
Try a sample question
One free sample from this chapter — sign in to check your answer and practise the rest.
Solve x + 5 = 12.
Unlock the full chapter — free
See the answer and solution to this question, then practise all 72 questions (24 Easy · 24 Medium · 24 Hard) with timed scoring and instant feedback, plus the complete key-concept notes, formulas & exam tips. Sign in with Google — no card needed.
Start this chapter free →Algebra Play — FAQs
What are the key concepts in Class 8 Mathematics Algebra Play?+
This chapter plays with algebra to explain and invent number tricks. A variable is a letter that stands for any number, and expressions are built from variables, coefficients and constants. You simplify expressions by combining like terms, evaluate them by substituting values, and solve simple equations by doing the same operation to both sides. The real fun is generalising — using a letter to prove why a 'think of a number' trick, a number pyramid or a digit-reversal always works. Key ideas include Variable, Expression, term, coefficient, Like and unlike terms, Simplifying expressions.
What does Class 8 Mathematics Chapter 13 (Algebra Play) cover on XamBaaz?+
It covers 72 NCERT-aligned MCQs on "Algebra Play" — 24 Easy, 24 Medium and 24 Hard — each with a timed quiz and an instant explanation, suitable for CBSE Board exams.
Are these "Algebra Play" questions free to practise?+
Yes — sign in with Google to practise "Algebra Play" free. Full unlimited access is ₹999/year (limited-time launch price), with no per-chapter charges.
How should I revise "Algebra Play" for the exam?+
Start with the Easy quiz to confirm your fundamentals, then attempt Medium and Hard for application-level practice. Review each explanation, retry the questions you miss, and track your accuracy on this chapter until it is consistently high.
Are these "Algebra Play" MCQs available with answers?+
Yes. This page shows one sample question so you can see the format; sign in free with Google to reveal the correct option and a step-by-step "Why" explanation for it, then practise all 72 questions with instant scoring.
Is there negative marking in the "Algebra Play" quizzes?+
Yes — the timed quizzes use exam-grade marking: +4 for a correct answer, −1 for a wrong one and 0 for a skipped question, so you practise the same negative-marking discipline as CBSE Board exams.
Are these important questions for Algebra Play?+
The set is curated to the NCERT syllabus and weighted toward the question patterns that actually appear in CBSE Board exams, across Easy, Medium and Hard — so it doubles as an "important questions" revision list for "Algebra Play".